public async void ChecklistProcessingToFailStateUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPChannel rtpChannel = new RTPChannel(false, null);
var iceSession = new IceSession(rtpChannel, RTCIceComponent.rtp, null);
iceSession.StartGathering();
Assert.NotNull(iceSession);
Assert.NotEmpty(iceSession.Candidates);
foreach (var hostCandidate in iceSession.Candidates)
{
logger.LogDebug($"host candidate: {hostCandidate}");
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate);
iceSession.SetRemoteCredentials("CI7o", "xxxxxxxxxxxx");
iceSession.StartGathering();
logger.LogDebug($"ICE session retry interval {iceSession.RTO}ms.");
// The defaults are 5 STUN requests and for a checklist with one entry they will be 500ms apart.
await Task.Delay(4000);
Assert.Equal(IceSession.ChecklistEntryState.Failed, iceSession._checklist.Single().State);
Assert.Equal(IceSession.ChecklistState.Failed, iceSession._checklistState);
Assert.Equal(RTCIceConnectionState.failed, iceSession.ConnectionState);
}
public async void ChecklistConstructionUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPChannel rtpChannel = new RTPChannel(false, null);
var iceSession = new IceSession(rtpChannel, RTCIceComponent.rtp, null);
iceSession.StartGathering();
Assert.NotNull(iceSession);
Assert.NotEmpty(iceSession.Candidates);
foreach (var hostCandidate in iceSession.Candidates)
{
logger.LogDebug($"host candidate: {hostCandidate}");
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate);
var remoteCandidate2 = RTCIceCandidate.Parse("candidate:408132417 1 udp 2113937150 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate2);
foreach (var entry in iceSession._checklist)
{
logger.LogDebug($"checklist entry: {entry.LocalCandidate} -> {entry.RemoteCandidate}");
}
Assert.Single(iceSession._checklist);
}
public async void ChecklistProcessingUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPChannel rtpChannel = new RTPChannel(false, null);
var iceSession = new IceSession(rtpChannel, RTCIceComponent.rtp, null);
iceSession.StartGathering();
Assert.NotNull(iceSession);
Assert.NotEmpty(iceSession.Candidates);
foreach (var hostCandidate in iceSession.Candidates)
{
logger.LogDebug($"host candidate: {hostCandidate}");
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate);
iceSession.SetRemoteCredentials("CI7o", "xxxxxxxxxxxx");
iceSession.StartGathering();
await Task.Delay(2000);
var checklistEntry = iceSession._checklist.Single();
logger.LogDebug($"Checklist entry state {checklistEntry.State}, last check sent at {checklistEntry.LastCheckSentAt}.");
Assert.Equal(IceSession.ChecklistEntryState.InProgress, checklistEntry.State);
}
public async void ChecklistProcessingToFailStateUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var rtpIceChannel = new RtpIceChannel(null, RTCIceComponent.rtp, null);
rtpIceChannel.StartGathering();
Assert.NotNull(rtpIceChannel);
Assert.NotEmpty(rtpIceChannel.Candidates);
foreach (var hostCandidate in rtpIceChannel.Candidates)
{
logger.LogDebug($"host candidate: {hostCandidate}");
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
rtpIceChannel.AddRemoteCandidate(remoteCandidate);
rtpIceChannel.SetRemoteCredentials("CI7o", "xxxxxxxxxxxx");
logger.LogDebug($"ICE session retry interval {rtpIceChannel.RTO}ms.");
await Task.Delay(1000);
rtpIceChannel._checklist.Single().FirstCheckSentAt = DateTime.Now.Subtract(TimeSpan.FromSeconds(RtpIceChannel.FAILED_TIMEOUT_PERIOD));
await Task.Delay(1000);
Assert.Equal(ChecklistEntryState.Failed, rtpIceChannel._checklist.Single().State);
Assert.Equal(ChecklistState.Failed, rtpIceChannel._checklistState);
Assert.Equal(RTCIceConnectionState.failed, rtpIceChannel.IceConnectionState);
}
public async void SortChecklistUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
RTPSession rtpSession = new RTPSession(true, true, true);
MediaStreamTrack dummyTrack = new MediaStreamTrack(null, SDPMediaTypesEnum.audio, false, new List <SDPMediaFormat> {
new SDPMediaFormat(SDPMediaFormatsEnum.PCMU)
});
rtpSession.addTrack(dummyTrack);
var iceSession = new IceSession(rtpSession.GetRtpChannel(SDPMediaTypesEnum.audio), RTCIceComponent.rtp, null);
iceSession.StartGathering();
Assert.NotNull(iceSession);
Assert.NotEmpty(iceSession.Candidates);
foreach (var hostCandidate in iceSession.Candidates)
{
logger.LogDebug(hostCandidate.ToString());
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate);
var remoteCandidate2 = RTCIceCandidate.Parse("candidate:408132417 1 udp 2113937150 192.168.11.51 51268 typ host generation 0 ufrag CI7o network-cost 999");
await iceSession.AddRemoteCandidate(remoteCandidate2);
foreach (var entry in iceSession._checklist)
{
logger.LogDebug($"checklist entry priority {entry.Priority}.");
}
}
public void SortChecklistUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var rtpIceChannel = new RtpIceChannel(null, RTCIceComponent.rtp, null);
rtpIceChannel.StartGathering();
Assert.NotNull(rtpIceChannel);
Assert.NotEmpty(rtpIceChannel.Candidates);
foreach (var hostCandidate in rtpIceChannel.Candidates)
{
logger.LogDebug(hostCandidate.ToString());
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
rtpIceChannel.AddRemoteCandidate(remoteCandidate);
var remoteCandidate2 = RTCIceCandidate.Parse("candidate:408132417 1 udp 2113937150 192.168.11.51 51268 typ host generation 0 ufrag CI7o network-cost 999");
rtpIceChannel.AddRemoteCandidate(remoteCandidate2);
foreach (var entry in rtpIceChannel._checklist)
{
logger.LogDebug($"checklist entry priority {entry.Priority}.");
}
}
public void ToJsonUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var candidate = RTCIceCandidate.Parse("1390596646 1 udp 1880747346 192.168.11.50 61680 typ host generation 0");
Assert.NotNull(candidate);
Assert.Equal(RTCIceCandidateType.host, candidate.type);
Assert.Equal(RTCIceProtocol.udp, candidate.protocol);
logger.LogDebug(candidate.toJSON());
bool parseResult = RTCIceCandidateInit.TryParse(candidate.toJSON(), out var init);
Assert.True(parseResult);
Assert.Equal(0, init.sdpMLineIndex);
Assert.Equal("0", init.sdpMid);
var initCandidate = RTCIceCandidate.Parse(init.candidate);
Assert.Equal(RTCIceCandidateType.host, initCandidate.type);
Assert.Equal(RTCIceProtocol.udp, initCandidate.protocol);
}
public void ParseSvrRflxCandidateUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var candidate = RTCIceCandidate.Parse("842163049 1 udp 1677729535 8.8.8.8 12767 typ srflx raddr 0.0.0.0 rport 0 generation 0 network-cost 999");
Assert.NotNull(candidate);
Assert.Equal(RTCIceCandidateType.srflx, candidate.type);
Assert.Equal(RTCIceProtocol.udp, candidate.protocol);
logger.LogDebug(candidate.ToString());
}
public void ParseHostCandidateUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var candidate = RTCIceCandidate.Parse("1390596646 1 udp 1880747346 192.168.11.50 61680 typ host generation 0");
Assert.NotNull(candidate);
Assert.Equal(RTCIceCandidateType.host, candidate.type);
Assert.Equal(RTCIceProtocol.udp, candidate.protocol);
logger.LogDebug(candidate.ToString());
}
public async void ChecklistConstructionUnitTest()
{
logger.LogDebug("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
logger.BeginScope(System.Reflection.MethodBase.GetCurrentMethod().Name);
var rtpIceChannel = new RtpIceChannel(null, RTCIceComponent.rtp, null);
rtpIceChannel.StartGathering();
Assert.NotNull(rtpIceChannel);
Assert.NotEmpty(rtpIceChannel.Candidates);
foreach (var hostCandidate in rtpIceChannel.Candidates)
{
logger.LogDebug($"host candidate: {hostCandidate}");
}
var remoteCandidate = RTCIceCandidate.Parse("candidate:408132416 1 udp 2113937151 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
rtpIceChannel.AddRemoteCandidate(remoteCandidate);
var remoteCandidate2 = RTCIceCandidate.Parse("candidate:408132417 1 udp 2113937150 192.168.11.50 51268 typ host generation 0 ufrag CI7o network-cost 999");
rtpIceChannel.AddRemoteCandidate(remoteCandidate2);
#pragma warning disable RCS1090 // Add call to 'ConfigureAwait' (or vice versa).
await Task.Delay(500);
#pragma warning restore RCS1090 // Add call to 'ConfigureAwait' (or vice versa).
foreach (var entry in rtpIceChannel._checklist)
{
logger.LogDebug($"checklist entry: {entry.LocalCandidate.ToShortString()}->{entry.RemoteCandidate.ToShortString()}");
}
Assert.Single(rtpIceChannel._checklist);
}
private static async Task RunCommand(Options options, bool noOptions)
{
// Plumbing code to facilitate a graceful exit.
CancellationTokenSource exitCts = new CancellationTokenSource(); // Cancellation token to stop the SIP transport and RTP stream.
//ManualResetEvent exitMre = new ManualResetEvent(false);
logger = AddConsoleLogger();
// Start MDNS server.
var mdnsServer = new ServiceDiscovery();
if (options.StunServer != null)
{
string[] fields = options.StunServer.Split(';');
_stunServer = new RTCIceServer
{
urls = fields[0],
username = fields.Length > 1 ? fields[1] : null,
credential = fields.Length > 2 ? fields[2] : null,
credentialType = RTCIceCredentialType.password
};
}
_relayOnly = options.RelayOnly;
if (!string.IsNullOrEmpty(options.IceTypes))
{
options.IceTypes.Split().ToList().ForEach(x =>
{
if (Enum.TryParse <RTCIceCandidateType>(x, out var iceType))
{
_iceTypes.Add(iceType);
}
});
if (!_iceTypes.Any(x => x == RTCIceCandidateType.host))
{
_offerOptions = new RTCOfferOptions {
X_ExcludeIceCandidates = true
};
_answerOptions = new RTCAnswerOptions {
X_ExcludeIceCandidates = true
};
}
}
if (!string.IsNullOrEmpty(options.AcceptIceTypes))
{
options.AcceptIceTypes.Split().ToList().ForEach(x =>
{
if (Enum.TryParse <RTCIceCandidateType>(x, out var iceType))
{
_acceptIceTypes.Add(iceType);
}
});
}
if (options.UseWebSocket || options.UseSecureWebSocket || noOptions)
{
// Start web socket.
Console.WriteLine("Starting web socket server...");
_webSocketServer = new WebSocketServer(IPAddress.Any, WEBSOCKET_PORT, options.UseSecureWebSocket);
if (options.UseSecureWebSocket)
{
_webSocketServer.SslConfiguration.ServerCertificate = new X509Certificate2(LOCALHOST_CERTIFICATE_PATH);
_webSocketServer.SslConfiguration.CheckCertificateRevocation = false;
}
_webSocketServer.AddWebSocketService <WebRTCWebSocketPeer>("/", (peer) =>
{
peer.OfferOptions = _offerOptions;
if (_acceptIceTypes != null && _acceptIceTypes.Count > 0)
{
peer.FilterRemoteICECandidates = (init) => _acceptIceTypes.Any(x => x == RTCIceCandidate.Parse(init.candidate).type);
}
peer.CreatePeerConnection = CreatePeerConnection;
});
_webSocketServer.Start();
Console.WriteLine($"Waiting for browser web socket connection to {_webSocketServer.Address}:{_webSocketServer.Port}...");
}
else if (!string.IsNullOrWhiteSpace(options.WebSocketServer))
{
// We are the client for a web socket server. The JSON signalling exchange still occurs the same way as when the web socket
// server option is used except that as the web socket client we receive the SDP offer from the server.
WebRTCWebSocketClient wsockClient = new WebRTCWebSocketClient(options.WebSocketServer, CreatePeerConnection);
await wsockClient.Start(exitCts.Token);
Console.WriteLine("web socket client started.");
}
else if (options.CreateJsonOffer)
{
var pc = await Createpc(null, _stunServer, _relayOnly);
var offerSdp = pc.createOffer(null);
await pc.setLocalDescription(offerSdp);
Console.WriteLine(offerSdp.sdp);
var offerJson = JsonConvert.SerializeObject(offerSdp, new Newtonsoft.Json.Converters.StringEnumConverter());
var offerBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(offerJson));
Console.WriteLine(offerBase64);
string remoteAnswerB64 = null;
while (string.IsNullOrWhiteSpace(remoteAnswerB64))
{
Console.Write("Remote Answer => ");
remoteAnswerB64 = Console.ReadLine();
}
string remoteAnswer = Encoding.UTF8.GetString(Convert.FromBase64String(remoteAnswerB64));
Console.WriteLine(remoteAnswer);
RTCSessionDescriptionInit answerInit = JsonConvert.DeserializeObject <RTCSessionDescriptionInit>(remoteAnswer);
Console.WriteLine($"Remote answer: {answerInit.sdp}");
var res = pc.setRemoteDescription(answerInit);
if (res != SetDescriptionResultEnum.OK)
{
// No point continuing. Something will need to change and then try again.
pc.Close("failed to set remote sdp");
}
}
else if (options.RestServer != null)
{
string[] fields = options.RestServer.Split(';');
if (fields.Length < 3)
{
throw new ArgumentException("The 'rest' option must contain 3 semi-colon separated fields, e.g. --rest=https://localhost:5001/api/webrtcsignal;myid;theirid.");
}
var webrtcRestPeer = new WebRTCRestSignalingPeer(fields[0], fields[1], fields[2], CreatePeerConnection);
webrtcRestPeer.OfferOptions = _offerOptions;
webrtcRestPeer.AnswerOptions = _answerOptions;
if (_acceptIceTypes != null && _acceptIceTypes.Count > 0)
{
webrtcRestPeer.FilterRemoteICECandidates = (init) => _acceptIceTypes.Any(x => x == RTCIceCandidate.Parse(init.candidate).type);
}
await webrtcRestPeer.Start(exitCts);
}
_ = Task.Run(() => ProcessInput(exitCts));
// Ctrl-c will gracefully exit the call at any point.
Console.CancelKeyPress += delegate(object sender, ConsoleCancelEventArgs e)
{
e.Cancel = true;
exitCts.Cancel();
};
// Wait for a signal saying the call failed, was cancelled with ctrl-c or completed.
exitCts.Token.WaitHandle.WaitOne();
Console.WriteLine();
Console.WriteLine("Exiting...");
_peerConnection?.Close("application exit");
_webSocketServer?.Stop();
Task.Delay(1000).Wait();
}
private static async Task WebSocketMessageReceived(WebSocketContext context, RTCPeerConnection pc, string message)
{
try
{
if (pc.localDescription == null)
{
//logger.LogDebug("Offer SDP: " + message);
logger.LogDebug("Offer SDP received.");
// Add local media tracks depending on what was offered. Also add local tracks with the same media ID as
// the remote tracks so that the media announcement in the SDP answer are in the same order.
var offerInit = JsonConvert.DeserializeObject <RTCSessionDescriptionInit>(message, new Newtonsoft.Json.Converters.StringEnumConverter());
logger.LogDebug(SDP.ParseSDPDescription(offerInit.sdp).ToString());
var res = pc.setRemoteDescription(offerInit);
if (res != SetDescriptionResultEnum.OK)
{
// No point continuing. Something will need to change and then try again.
pc.Close("failed to set remote sdp");
}
else
{
var answer = pc.createAnswer(_answerOptions);
await pc.setLocalDescription(answer);
context.WebSocket.Send(JsonConvert.SerializeObject(answer, new Newtonsoft.Json.Converters.StringEnumConverter()));
}
}
else if (pc.remoteDescription == null)
{
logger.LogDebug("Answer SDP received:");
var answerInit = JsonConvert.DeserializeObject <RTCSessionDescriptionInit>(message, new Newtonsoft.Json.Converters.StringEnumConverter());
logger.LogDebug(SDP.ParseSDPDescription(answerInit.sdp).ToString());
var res = pc.setRemoteDescription(answerInit);
if (res != SetDescriptionResultEnum.OK)
{
// No point continuing. Something will need to change and then try again.
pc.Close("failed to set remote sdp");
}
}
else
{
logger.LogDebug("ICE Candidate: " + message);
if (string.IsNullOrWhiteSpace(message) || message.Trim().ToLower() == SDP.END_ICE_CANDIDATES_ATTRIBUTE)
{
logger.LogDebug("End of candidates message received.");
}
else
{
var candInit = Newtonsoft.Json.JsonConvert.DeserializeObject <RTCIceCandidateInit>(message);
if (_acceptIceTypes.Count > 0 && !_acceptIceTypes.Any(x => x == RTCIceCandidate.Parse(candInit.candidate).type))
{
logger.LogDebug($"Ignoring remote ICE candidate as type not in accept list.");
}
else
{
pc.addIceCandidate(candInit);
}
}
}
}
catch (Exception excp)
{
logger.LogError("Exception WebSocketMessageReceived. " + excp.Message);
}
}